:
An owner consent was completed by the farmer prior to the enrolment of his animals in the study. This study was conducted in compliance with the Good Clinical Practice Guidance Document #85, May 9, 2001 (VICH GL9) and was approved by PigCHAMP Pro Europa animal welfare committee. Animals were handled in compliance with both Spanish regulations and guidelines for the protection of animals used for scientific research (Real Decreto Español 223/88 BOE 67: 8509–8511) and applicable European regulation.

:
Not applicable.

:
The authors declare that they have no competing interests.

:
Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.